YouTube High Definition is a powerful tool that will let you automatically play all YouTube videos in HD (High Definition), turn off annotations, change video player size, auto stop videos, auto mute videos, control embedded videos and much more.

Pickemfirst is your fantasy sport assistant.It will save you time and help you find the best free agents available in your fantasy league. It supports all the major sports (NFL, MLB, NBA, NHL) and leagues (Yahoo, ESPN, CBS...)

Bid-Ninja is a browser plugin that allows it's users to slice through their auction competition on Quibids, MadBid, DealDash & Beezid! See every competing players total bids used, voucher bids used, net gain/loss and more, and it's free to use

Cheevos for Firefox is an addon for Firefox that makes learning about different parts of the browser fun, as well as giving you the opportunity to brag to your friends about your pro-level web surfing.